JP6065012B2 - Receiving apparatus and receiving method - Google Patents

Description

The present disclosure relates to receiving apparatus and receiving how, particularly suitable receiving apparatus used when in conjunction to a television program to operate a predetermined application program, and a reception how.

  In digital television broadcasting, not only broadcasting services for television programs (hereinafter abbreviated as programs) but also so-called data broadcasting services are performed (see, for example, Patent Document 1). By using this data broadcast, a predetermined application program (hereinafter also abbreviated as application or application as appropriate) is supplied to the receiving side and executed in conjunction with the program.

  Conventionally, an application linked to a program (hereinafter also abbreviated as “linked application” or “linked application”) has been produced by a broadcasting station that broadcasts a program and supplied to a receiving apparatus together with the program. However, in the future, it is assumed that a service operation form in which a general application company that is not related to a program creates a linked application and supplies the linked application to a receiving apparatus by some method is executed.

JP 2006-50237 A

  By the way, the linked application determines the layout of the screen output by the receiving device, refers to the metadata of the program, and controls operations related to reception of the receiving device (for example, channel selection) (these) Are collectively referred to as a receiving device control function).

  Therefore, if a general app operator intends to create a linked app or if the linked app malfunctions due to a bug, the video and audio of the program will not be output by the receiver control function described above. Or information with contents that slander the program may be displayed together with the program.

  Therefore, when allowing a general application provider to produce a linked app, it is desirable that the broadcast side can control the receiving device control function of the linked app so that the occurrence of the above-described situation can be suppressed.

  This indication is made in view of such a situation, and provides the mechanism by which the broadcast side can control the receiving device control function of a conjunction application.

A receiving device according to a first aspect of the present disclosure executes a communication unit that performs communication processing and a linked application that is linked to the received content in a receiving device that receives content broadcast via a broadcast network. an application execution unit, based on the application control information relating to the interlocking application, and an application control unit for controlling the application execution unit, the communication unit obtains through the communication network the interlocking application, the application control The information includes an application boundary that indicates the range of a URL (Uniform Resource Locator) that links the linked application with the content, and a bitmap that assigns whether or not the linked application has access rights to the broadcast resource for each function. Including at least permission information expressed in a structure, wherein the bitmap structure includes a first bit area composed of higher-order bits and a second bit composed of lower-order bits in which presence / absence of function is assigned to each bit position. A value for switching each function assigned to each bit position of the second bit area is set in the first bit area, and the application control unit The access authority to the broadcast resource by the permission information is set for each function within the range of the URL indicated by the application boundary for the linked application .

The first receiving method is a embodiment of the present disclosure, in the receiving method of a receiving apparatus for receiving broadcast content via a broadcasting network, by the receiving device, a communication processing step of performing processing of communication, received the An application execution step of executing a linked application linked to content, and an application control step of controlling processing of the application execution step based on application control information related to the linked application, wherein the communication processing step includes the linked application a processing for acquiring via the communication network, the application control information, the interlocking application boundary representing the range of URL that links to the content application, and, broadcasting Li by the interlocking application Including at least permission information represented by a bitmap structure in which the presence / absence of access authority to the source is assigned to each function bit. The bitmap structure includes a first bit area composed of higher-order bits and each bit And a second bit area consisting of lower-order bits to which the presence / absence of function is assigned to the position, and the first bit area is assigned to each bit position of the second bit area A value for switching each function is set, and by the processing of the application control step, the access authority to the broadcast resource by the permission information within the range of the URL indicated by the application boundary for the linked application Is set in units of functions.

In the first aspect of the present disclosure, a linked application that is linked to received content is executed, and execution of the application is controlled based on application control information related to the linked application. The execution of the application includes a process of acquiring the linked application via a communication network.

  According to the first aspect of the present disclosure, the operation of the conjunction application can be restricted based on the application control information.

It is a block diagram showing an example of composition of a conjunction application control system to which this indication is applied. FIG. 2 is a block diagram illustrating a configuration example of a receiving device in FIG. 1. It is a figure explaining the operation | movement outline | summary of a broadcast origin type | mold interlocking | linkage application. It is a figure explaining the operation | movement outline | summary of a non-broadcast starting type | mold interlocking | linkage application. It is a figure which shows the state transition of the display of a receiver. It is a figure explaining the item of the application control information corresponding to 1st Embodiment. It is a figure which shows the bit map of permission information. It is a figure explaining the video reference of permission information. It is a flowchart explaining the conjunction application execution process corresponding to 1st Embodiment. It is a figure which shows the example which the broadcast side controls the receiving apparatus control function in the domain unit of the web page which changes. It is a figure explaining an inline frame. It is a figure which shows the example which the broadcast side controls collectively the receiver control function in the web page which changes within an inline frame. It is a figure explaining the item of the application control information corresponding to 2nd Embodiment. It is a figure which shows an example of the syntax of the application control information corresponding to 2nd Embodiment. It is a figure which shows an example of the syntax of an application boundary and the domain unit permission information 101. FIG. It is a flowchart explaining the conjunction application execution process corresponding to 2nd Embodiment. It is a block diagram which shows the structural example of a computer.

  Hereinafter, the best mode for carrying out the present disclosure (hereinafter referred to as an embodiment) will be described in detail with reference to the drawings.

  In the first embodiment described below, the broadcast side can control the receiving apparatus control function in units of linked applications. In the second embodiment, the broadcast side can control the receiving device control function in the domain unit of the web page to which the linked application transitions (the domain unit of the server that acquires and refers to the data).

<1. First Embodiment>
[Configuration example of linked application control system]
FIG. 1 shows a coordinated application control system that is an embodiment of the present disclosure. The linked application control system 10 executes a linked application in conjunction with a program received and displayed on the receiving side.

  The linked application control system 10 includes a broadcasting device 11, a communication device 13, and receiving devices 20-1 to 20-N. Hereinafter, when there is no need to individually distinguish the receiving devices 20-1 to 20-N, they are simply referred to as the receiving device 20.

  The broadcast device 11 broadcasts a broadcast signal (broadcast stream) of a television broadcast via a broadcast network 12 such as a terrestrial digital broadcast network, a satellite broadcast network, or a cable television network. This broadcast stream includes a video signal such as a CM of a program, a sound signal, a caption signal, and a signal for a data broadcasting service. Furthermore, the broadcast stream includes application control information including information that triggers activation and termination of the linked app, information that triggers event firing in the linked app that is being executed, and data used in the event. Contains event messages at any time.

  The communication device 13 is connected to an IP communication network 14 typified by the Internet, and supplies a linked app in response to a request from the receiving device 20 that is accessed via the IP communication network 14. Note that the linked app may be supplied to the receiving device 20 using a data broadcast signal of a broadcast stream. The application control information and event message described above may be supplied to the receiving device 20 via the IP communication network 14.

  The receiving device 20 receives a broadcast stream broadcast from the broadcasting device 11 via the broadcast network 12, and outputs a program and CM video and audio to a subsequent monitor (not shown). In addition, the receiving device 20 acquires and executes a linked app from the communication device 13 via the IP communication network 14.

  The receiving apparatus 20 may be configured as a single unit, or may be incorporated in, for example, a digital television receiver, a video recorder, a personal computer, a smartphone, or the like.

[Configuration Example of Receiving Device 20]
Next, FIG. 2 shows a configuration example of the receiving device 20.

  The receiving device 20 includes a broadcast tuner 21, a descrambler 22, a CAS module 23, a demultiplexer 24, a data broadcast processing unit 25, a data broadcast engine 26, a video decoder 27, an audio decoder 28, and a caption decoder as a television broadcast receiving system. 29. Furthermore, the receiving device 20 includes an application control unit 30, an IP communication I / F 31, and an application engine 32 as a linked application control system. Furthermore, the receiving device 20 includes a video output unit 33, an audio output unit 34, an operation input unit 35, and a control unit 36 as an input / output system.

  The broadcast tuner 21 receives and demodulates a frequency component corresponding to the channel selection from the broadcast television signal, and outputs a broadcast stream obtained as a result to the descrambler 22. When the broadcast stream is scrambled, the descrambler 22 uses the key obtained from the CAS (Conditional Access System) module 23 to release the scramble and outputs it to the demultiplexer 234. The CAS module 23 acquires a key for descrambling from a B-CAS card or the like.

  The demultiplexer 24 separates and extracts the data broadcast signal from the broadcast stream and outputs the data broadcast signal to the data broadcast processing unit 25. Further, the demultiplexer 24 separates and extracts the encoded video data, encoded audio data, and encoded subtitle data of the program from the broadcast stream, and outputs them to the video decoder 27, audio decoder 28, or subtitle decoder 29, respectively. To do. Further, the demultiplexer 24 separates and extracts application control information (also referred to as AIT (Application Information Table)) from the broadcast stream, and outputs it to the application control unit 30.

  The data broadcast processing unit 25 reads a data broadcast application described in, for example, BML (Broadcast Markup Language) or JAVA (registered trademark) from the data broadcast signal and outputs the data broadcast application to the data broadcast engine 26. The data broadcasting engine 26 executes an application for data broadcasting described in BML or the like using a built-in BML browser or the like. The executed data broadcasting application outputs a data signal of the data broadcast to the video output unit 33 and outputs an audio signal of the data broadcast to the sound output unit 34. The executed data broadcasting application can control the application control unit 30 to start the linked application.

  The video decoder 27 decodes the encoded video data and outputs the video signal of the program obtained as a result to the video output unit 33. The audio decoder 28 decodes the encoded audio data and outputs the audio signal of the program obtained as a result to the audio output unit 34. The subtitle decoder 29 decodes the encoded subtitle data, and outputs the subtitle signal of the program obtained as a result to the video output unit 33.

  The application control unit 30 analyzes application control information (AIT) input from the demultiplexer 24 and controls the application engine 32 based on the analysis result. Further, the application control unit 30 controls the IP communication I / F 31, obtains application control information (AIT) from a predetermined server (for example, the communication device 13) via the IP communication network 14, and analyzes the analysis The application engine 32 is controlled based on the result. The IP communication I / F 31 communicates with a predetermined server (for example, the communication device 13) via the IP communication network 14.

  The application engine 32 accesses the communication device 13 via the IP communication I / F 31 and the IP communication network 14 according to the control from the application control unit 30, and acquires and executes a linked app described in HTML5 or the like. Then, the application engine 32 outputs the video signal output from the conjunction application to the video output unit 33 and the audio signal to the audio output unit 34. The application engine 32 can also execute a general application (for example, an Internet browser) that is different from the linked application.

  The video output unit 33 selects or combines video signals input from the respective units and outputs them to the subsequent stage. The audio output unit 34 selects or combines the audio signals input from the respective units and outputs them to the subsequent stage.

  The operation input unit 35 receives various operation inputs from the user and outputs operation signals to the control unit 36. The control unit 36 controls each unit of the receiving device 20 based on the operation signal.

[Description of operation overview]
Next, an outline of the operation of two types of linked apps (broadcast start type linked app and non-broadcast start type linked app) by the linked application control system 10 will be described.

  FIG. 3 shows an outline of the operation of the broadcast start type link app. In the broadcast start type link app, the receiving device 20 acquires and starts the link app based on application control information (AIT) included in the broadcast stream. As shown in the figure, the application control information may be broadcast as a stream different from the video stream or the audio stream, or may be broadcast embedded in the video stream or the audio stream.

  For example, as shown in the figure, when the receiving device 20 receives the application control information broadcast together with the program A, the receiving device 20 acquires the linked app A from the communication device 13 based on the received application control information and starts it. Note that the same application control information including an item serving as a trigger for starting the conjunction application is continuously broadcast a plurality of times in consideration of failure of reception by the reception side.

  For example, the activated linked app A can display the program A in a small screen by providing a display area for the program A in the video of the linked app A, for example. In addition, when the event is fired by the event message, for example, the video of the linked application A can be changed. Then, the linked app A is terminated when the program A ends (the linked app A can be continuously started without being terminated).

  When the program B is started after the program A, the linked app B is acquired and activated as in the case of the program A. Note that the termination of the linked application A and the activation of the linked application B may be simultaneous. For example, the activated linked app B can be displayed by providing a sub-screen for the linked app B in the video of the program B displayed on the entire screen. The linked app B is terminated when the program B ends (the linked app B can be continuously started without being terminated).

  Next, FIG. 4 shows an outline of the operation of the non-broadcast starting type link app. In the non-broadcast start type linked app, the receiving device 20 activates the linked app in response to an operation input from the user.

  For example, it is assumed that the reception device 20 can display an application launcher (Application launcher) for allowing the user to select an application to be executed from among a plurality of executable applications. In the case of the example in the figure, in the application launcher, an interlocking application “TV viewer” that allows a television program to be viewed and an application “VOD” (video on demand) that allows a content distributed via the IP communication network 14 to be viewed. Can be selected. When the user performs a selection operation of “TV viewer” for the application launcher, the receiving device 20 selects a predetermined URL (in this case, the communication device 13) associated with “TV viewer” in advance. To obtain application control information corresponding to the linked app “TV viewer”.

  The receiving device 20 that has acquired the application control information analyzes the link control application “TV viewer” only when the reliability can be confirmed by analyzing it (for example, when the attached electronic signature passes the signature verification). Obtained from the communication device 13 and activated. The linked app “TV viewer” may be held in the receiving device 20 in advance.

  The activated linked application “TV viewer” can control the selection of a service (channel) to be received by controlling the television broadcast receiving system of the receiving device 20. In addition, a channel selection button serving as a user interface can be displayed in the video of the linked application “TV viewer”. For example, when the service (channel) X is first selected and then the service (channel) Y is selected according to the operation from the user, the program display area is displayed on the output screen of the linked app “TV viewer”. First, a program broadcast on the service X is displayed, and then a program broadcast on the service Y is displayed.

[Regarding State Transition of Receiving Device 20]
FIG. 5 shows a display state transition of the receiving device 20.

  There are five types of display states of the receiving device 20 shown in the figure.

  State 1 is a state in which a broadcast program is being received and displayed. State 2 is a state in which a broadcast program and a data broadcast are received and the program and the data broadcast are displayed simultaneously. State 3 is a state in which a broadcast program and a video of a broadcast start type link app are displayed in combination. State 4 is a state in which a broadcast program and a video of a non-broadcast starting type link app are displayed in combination. State 5 is a state in which an image of a general application different from the broadcast start type link app and the non-broadcast start type link app is displayed.

  The state 1 can be changed from any state by performing a television broadcast channel selection operation. Transition to state 2 can be made by additionally receiving data broadcasting in state 1. Transition to state 3 can be made by starting the broadcast starting type link app in state 1.

  The state 2 can be changed from any state by performing a television broadcast channel selection operation. Transition to state 1 can be made by stopping data broadcasting in state 2. Transition to state 3 can be made by launching the broadcast starting type linked app in state 2.

  In the state 3, the broadcast start type link app can be switched (transition to another broadcast start type link app). Transition to state 1 or state 2 can be made by ending the broadcasting start type link application being executed in state 3. In state 3, for example, the user can transition to state 5 by selecting a hyperlink such as a banner advertisement.

  The state 4 can be transitioned from any state by selecting the non-broadcast starting type linked app in the application launcher. In the state 4, the non-broadcast start type link app can be switched (transition to another non-broadcast start type link app). In state 4, for example, the user can transition to state 5 by selecting a hyperlink such as a banner advertisement.

  It should be noted that transition from state 5 to state 1 to state 4 cannot be made, and in order to return to state 1 to state 4, it is necessary to terminate the general application being executed.

[Application control information (AIT) corresponding to the first embodiment]
Next, FIG. 6 shows items included in the application control information corresponding to the first embodiment. As described above, in the first embodiment, the broadcasting side controls the receiving device control function in units of linked applications.

  The application control information 50 includes, as essential items, an application type 51, a provider ID 52, an application ID 53, an application control command 54, and an application specification version 55.

  The application control information 50 includes, as optional items, a receiving device request function profile 56, an application URL 57, an application boundary 58, an application system priority 59, an application broadcast cooperation range 60, permission information 61, and a server access distribution parameter 62. Can be included. Note that even optional items may be required depending on the type of control option represented by the application control command 54.

  The application type 51 is information representing the type (description language) of the corresponding linked application. The company ID 52 is identification information of the application company that created the corresponding linked application. The application ID 53 is unique identification information for a specific business operator of the corresponding linked app.

  The application control command 54 is information representing a control action for the corresponding linked application, and is one of four types of automatic activation, prefetch, termination, or operation. The automatic activation means that if the corresponding linked app has not been acquired, it is acquired and activated. Prefetching means that the corresponding linked app is acquired in advance before automatic. Termination means that the corresponding linked app is terminated. Operable means that the corresponding linked app is allowed to be executed when the application control information 50 is acquired.

  The application specification version 55 is information representing a version number for each application type (description language).

  The reception device request function profile 56 has a function required for the reception device 20 when executing the corresponding linked application (for example, a built-in decoder corresponding to a predetermined encoding method, a built-in storage having a predetermined capacity or more). Profile value indicating that the user is Only when the receiving device 20 has a function indicated by the profile value, the corresponding linked app can be activated.

  The application URL 57 is a URL (Uniform Resource Locator) representing the acquisition destination of the corresponding linked app (in the case of the present embodiment, the communication device 13). The application boundary 58 is information representing a range in which a corresponding linked application can transition web pages. The application system priority 59 is information indicating the priority of activation when applications (including data broadcasting) set to be automatically activated overlap. The application broadcast cooperation range 60 is information representing a range (linked operation range) in which execution is continued without ending the linked application being executed.

  The permission information 61 is information for controlling the receiving device control function for the corresponding linked app. Here, the reception device control function determines the layout of the screen output by the reception device 20, refers to the metadata of the program, and controls operations related to reception of the reception device 20 (for example, channel selection). It means to do. The permission information 61 will be described in detail with reference to FIGS.

  The server access distribution parameter 62 is a control parameter for temporally distributing access to the server (communication device 13 in the case of the present embodiment) from which the corresponding linked app is acquired.

[Bitmap of permission information 61]
FIG. 7 shows an example of a bit map of the permission information 61. In the figure, the permission information 61 is 8 bits, but a larger number of bits may be assigned to the permission information 61.

  As for the permission information 61, 2 bits from the most significant side are the video reference 71, and each subsequent bit is the real-time channel selection 72, the reservation channel selection 73, the SI reference 74, the current channel selection information acquisition 75, the NVRAM Read 76, and the NVRAM Write 77. It is said that.

  The 2-bit video reference 71 represents a level allowed for the linked application regarding the video layout of the program on the screen. FIG. 8 is a diagram for explaining the video reference 71 of the permission information 61.

  As shown in FIG. 8, the 2-bit video reference 71 is set to 00, 01, 10 or 11.

  The video reference 71 is not set to 00 for the broadcast start type link app (the setting itself is not allowed). For the non-broadcast start type link app, it is allowed to set the video reference 71 to 00. When the video reference 71 is set to 00, the non-broadcast start type link app is obtained from the broadcast stream. Refers to (quotes) information is not permitted.

  When the video reference 71 is set to 01 for the broadcast start type linked app, it means that a state where the video of the program is displayed on the entire screen and the video of the linked app is not displayed is allowed.

  When the video reference 71 is set to 01 for a non-broadcast start type linked app, the video of the program is displayed on the entire screen, and the video of the linked app is not displayed, or information obtained from broadcasting is not referred to Means that is allowed.

  When the video reference 71 is set to 10 for the broadcast start type linked app, it means that a state in which the video of the program is displayed in the sub-screen in the video of the linked app is allowed.

  When the video reference 71 is set to 10 for a non-broadcast start type linked app, a state where a video of a program is displayed in a sub-screen in the linked app video or information obtained from broadcasting may not be referred to. Means allowed.

  When the video reference 71 is set to 11 for the broadcasting start type linked app, the program video is displayed in a sub-screen on the linked app video, and the linked app video is superimposed on the program video. Means that is allowed.

  When the video reference 71 is set to 10 for a non-broadcast start type linked app, the video of the program is displayed in a sub-screen on the video of the linked app, and the video of the linked app is superimposed on the video of the program. It means that it is allowed not to refer to information obtained from the state or broadcast.

  Returning to FIG. The 1-bit real-time channel selection 72 indicates whether or not real-time channel selection (channel change) is permitted for the linked application. The 1-bit reservation channel selection 73 indicates whether or not reservation channel selection (including recording reservation) is permitted for the linked app.

  The 1-bit SI reference 74 indicates whether or not reference to SI (Service Information) included in the broadcast stream is permitted for the linked application. The 1-bit current channel selection information acquisition 75 indicates whether or not acquisition of information (such as a network ID) indicating a service (channel) currently selected by the receiving device 20 is permitted.

  The 1-bit NVRAM Read 76 indicates whether or not reading of information from the nonvolatile memory built in the receiving device 20 is permitted. The 1-bit NVRAM Write 77 represents whether or not writing of information to the nonvolatile memory built in the receiving device 20 is permitted.

[Description of Linked Application Execution Processing Corresponding to First Embodiment]
Next, FIG. 9 is a flowchart for explaining the linked application execution processing corresponding to the first embodiment by the receiving device 20.

  This linked application execution process is performed before the broadcast starting linked application is activated in response to the automatic activation of the control action represented by the application control command 54 of the application control information 50 received together with the program in the receiving device 20. Started as a process. As a premise, it is assumed that the receiving device 20 always receives the latest application control information 50 from the broadcast stream while receiving a program.

  In step S1, the application control unit 30 acquires the latest application control information 50 from the demultiplexer 24, and in step S2, analyzes the application control information 50 and stores the permission information 61 included therein.

  In step S <b> 3, the application control unit 30 controls the IP communication I / F 31 based on the application URL 57 of the application control information 50 to acquire the corresponding broadcast start type link app from the communication device 13. The acquired broadcast start type link application is supplied to the application engine 32. Note that step S3 can be omitted when the corresponding broadcast starting type link app has already been acquired.

  In step S4, the application control unit 30 analyzes the description content (data content of the application program) of the broadcast start type link app supplied to the application engine 32, and relates to a receiving device control function executed by the broadcast start type link app. It is determined whether the operation matches the content permitted in the permission information 61 of the application control information 50. If this determination result is negative, the corresponding broadcast-origin-type linked app attempts to control the receiving device 20 at a level that is not permitted by the permission information 61, and the app operator intends to maliciously There is a possibility of making a mistake or making a programming mistake. Therefore, in this case, the process proceeds to step S5, and the linked application execution process is terminated with an error without starting the broadcast start type linked app.

  If the determination result in step S4 is affirmative, the process proceeds to step S6. In step S <b> 6, the application engine 32 activates the broadcast start type linked app according to the control from the application control unit 30. As a result, the receiving apparatus 20 transitions to the state 3 in FIG.

  After the corresponding broadcast start type link app is activated, the process proceeds to step S7. In step S <b> 7, the application control unit 30 determines whether or not a web page transition exceeding the operation range represented by the application boundary 58 of the application control information 50 has occurred due to the broadcast starting type link app executed by the application engine 32. Determine. If this determination result is affirmative, the process proceeds to step S8. In step S <b> 8, the application engine 32 ends the broadcast start type link app being executed, and starts an Internet browser or the like as a general app. The Internet browser or the like displays the transition destination page. As a result, the conjunction application execution process is terminated, and the receiving device 20 transitions to the state 5 in FIG.

  If the determination result from step S7 is negative, the process proceeds to step S9. In step S <b> 9, the application control unit 30 determines whether or not a transition to another broadcast start type link app has occurred due to the broadcast start type link app being executed. If this determination result is affirmative, the process proceeds to step S10. In step S10, the application control unit 30 refers to the application control command 54 of the most recently received application control information 50, and determines whether or not the other broadcast start type linked app is currently operable. To do. If this determination result is affirmative, the process is returned to step S3, and the processes after step S3 described above are performed in order to start another broadcast-starting linked app of the transition destination. On the other hand, if the determination result in step S10 is negative, the other broadcast starting type linked app of the transition destination is not activated, the process returns to step S7, and the subsequent steps are repeated.

  If the determination result of step S9 is negative, the process proceeds to step S11. In step S <b> 11, the application control unit 30 determines whether or not to terminate the broadcast starting type link app being executed by the application engine 32. Specifically, it is determined that the application control command 54 of the most recently received application control information 50 has ended or when the user has performed a predetermined end operation. If this determination is negative, the process returns to step S7 and the subsequent steps are repeated. On the other hand, when the determination result of step S11 is affirmative, the broadcast start type link app being executed by the application engine 32 is ended, and the link application execution process is also ended.

  According to the linked application execution process described above, the broadcast side can step-by-step control the activation and execution of the receiving device control function for the broadcast start type linked app by the permission information 61 of the application control information 50. it can.

  The linked application execution process described above is similarly executed as a preprocess when a non-broadcast starting type linked application is activated in the receiving device 20. However, in this case, the supply source of the application control information 50 is changed to a predetermined server. Therefore, if only the legitimate application control information 50 authenticated by the broadcast side is supplied to the reception device 20, the broadcast side can control the reception device control function of the non-broadcast start type linked app step by step.

<2. Second Embodiment>
Next, a second embodiment will be described. In the first embodiment, the permission information is set for the linked app. However, in the second embodiment, the domain unit of the web page to which the linked app can transition (a server that acquires and references data). The broadcast side can control the receiver control function in units of domains).

  FIG. 10 shows an example in which the broadcaster controls the receiving device control function in units of domains of web pages to which the conjunction application is changing, in other words, sets permission information in units of domains of web pages.

  For example, in the case of FIG. 10, for the domain (entry Broadcaster Domain) of the entry page of the linked application A corresponding to the program A, all items of permission information are set to be allowed. In addition, reading / writing of data to / from NVRAM is prohibited for the domain (Another Domain 1) of the web page 1 linked to the anchor a of the entry page. Further, SI reference is prohibited for the domain (Another Domain 2) of the web page 2 linked to the anchor b of the entry page. Furthermore, the web page domain linked to the anchor c of the entry page is set so as not to be transitioned.

  When set in this way, the linked application A executed in conjunction with the program A can transition from the entry page to the web page 1 or the web page 2 in accordance with a user operation. However, the linked app A cannot access the NVRAM of the receiving device 20 in a state where the web page 1 is transitioned to. In addition, the linked app A cannot refer to the SI of the broadcast stream received by the receiving device 20 in the state of transition to the web page 2. The linked application A that is running cannot transition to a web page other than web page 1 or web page 2, but can transition to a general application web page by using a dedicated JAVA (registered trademark) script function. Is possible.

  By the way, as shown in FIG. 11, for example, the linked application A that is executed in conjunction with the program A displays an anchor such as a “detailed decision button” on the screen of the program A as an entry page, and the user is responded accordingly. When the user performs an operation, the program A may be displayed on a small screen, and a web page may be displayed in the display area of the linked application A using an inline frame (Iframe).

  In an inline frame, web page transitions can be performed in an intrusive manner, so it is practically impossible to set permission information for each domain of the web page that transitions in the inline frame. Therefore, in the second embodiment, the permission information can be individually set for the domain specified in the application domain, and the common permission information can be collectively set for the domain outside the range of the application domain. (The broadcasting side controls the receiving device control function when transitioning to the domain).

  FIG. 12 shows an example in which common permission information is collectively set for domains outside the range specified by the conjunction application.

  For example, in the case of FIG. 12, for the domain (entry Broadcaster Domain) of the entry page of the linked application A corresponding to the program A, all items of permission information are set to be permitted. In addition, the web page 1 domain (Another Domain 1) linked to the anchor a of the entry page is set so that reading / writing of data to / from NVRAM is prohibited. Further, SI reference is prohibited for the domain (another domain 3) of the web page 3 linked to the web page 1. Further, SI reference is prohibited for the domain (Another Domain 2) of the web page 2 linked to the anchor b of the entry page. Furthermore, the web page domain linked to the anchor c of the entry page is set so as not to be transitioned.

  For domains outside the above range, all items of the permission information are set to be disabled collectively.

  When set in this way, the linked application A executed in conjunction with the program A can transition from the entry page to the web page 1 or the web page 2 in accordance with a user operation. In addition, a transition from web page 1 to web page 3 is possible. However, the linked app A cannot access the NVRAM of the receiving device 20 in a state where the web page 1 is transitioned to. In addition, the linked app A cannot refer to the SI of the broadcast stream received by the receiving device 20 in the state of transition to the web page 2 or the web page 3. Note that web page 2 uses an inline frame, and transitions to Another Domain 4, 5, 6 in the inline frame and displays the corresponding web page. However, all of the permission information for Another Domain 4, 5, 6 is displayed. Since the item is set to be impossible, the sub-screen display of the program A that requires the video reference of the program A cannot be executed. Of course, if the video reference of the permission information is allowed in common with the other domains 4, 5, and 6, the sub-screen display of the program A can be executed.

[Application control information (AIT) corresponding to the second embodiment]
Next, FIG. 13 shows items included in the application control information 100 corresponding to the second embodiment. In addition, since the same number is attached | subjected about the item which is common in the item contained in the application control information 50 corresponding to 1st Embodiment, the description is abbreviate | omitted.

  As apparent from FIG. 13, the application control information 100 is obtained by deleting the application boundary 58 and the permission information 61 from the application control information 50 and adding the application boundary and the domain unit permission information 101.

  The application boundary and domain unit permission information 101 specifies the domain range of the web page to which the linked application can transition, sets the permission information for each domain belonging to the range, and batches the domain outside the range. Thus, common permission information is set.

  However, the permission information 61 in the application control information 50 is 8 bits, whereas the permission information in the application boundary and the domain unit permission information 101 is extended to 16 bits.

  Next, FIG. 14 shows an example of syntax corresponding to the application control information 100 shown in FIG.

  Among the items of the application control information 100, the application type 51 is described in application_type that is underlined in the syntax. The provider ID 52 and the application ID 53 are described in the application_identifier () that is underlined. The application control command 54 is described in the underlined application_control_code. The application specification version 55 is described in the underlined version_number. Other items of the application control information 100 are described in the underlined descriptor ().

  FIG. 15 shows an example of the syntax of the application boundary and domain unit permission information 101 described in the descriptor ().

  The boundaryless_flag underlined in the syntax is a flag indicating whether or not the application boundary is infinite. Specifically, the boundaryless_flag is displayed on a web page of a domain outside the domain specified in descriptor (). This is 1-bit information indicating whether or not transition is possible. When boundaryless_flag = 1, transition to an arbitrary domain is allowed. When boundaryless_flag = 0, the domain range specified in descriptor () becomes the application domain, and a transition outside the application boundary range is not allowed. When boundaryless_flag = 1, common permission information (all items cannot be set) is collectively set for domains outside the domain range specified in descriptor ().

  It should be noted that the contents of the common permission information to be collectively set can be set not to disable all items but to allow predetermined items. In that case, permission information (similar to permission_bitmap described later) to be set collectively for domains outside the above range may be specifically described following boundaryless_flag.

  In boundary_extension_count, the number of domains set as belonging to the application boundary is described. In boundary_extension_byte, a character string (arbitrary URL) representing a domain (or its subdirection) belonging to the application boundary is described.

  permission_bitmap is permission information set for a domain belonging to the application boundary. The permission_bitmap can represent all items of the 8-bit permission information 61 shown in FIG. 7, and is extended to 16 bits so that more items can be added.

  The upper 3 bits of the 16 bits indicate switching of permission_bitmap. For example, 000 is described in the upper 3 bits of the permission_bitmap corresponding to the first domain belonging to the application boundary, and 001 is described in the upper 3 bits of the permission_bitmap corresponding to the second domain.

[Description of Linked Application Execution Processing Corresponding to Second Embodiment]
Next, FIG. 16 is a flowchart for explaining the linked application execution process corresponding to the second embodiment by the receiving device 20.

  This linked application execution process is performed before the broadcast starting linked application is activated in response to the automatic activation of the control action represented by the application control command 54 of the application control information 100 received together with the program in the receiving device 20. Started as a process. As a premise, it is assumed that the receiving device 20 always receives the latest application control information 100 from the broadcast stream while receiving a program.

  In step S <b> 21, the application control unit 30 acquires the latest application control information 100 from the demultiplexer 24. In step S22, the application control unit 30 analyzes the application control information 100, and stores the application boundary and domain unit permission information 101 (hereinafter referred to as domain unit permission information 101 as appropriate) included therein.

  In step S <b> 23, the application control unit 30 controls the IP communication I / F 31 based on the application URL 57 of the application control information 100 to acquire the corresponding broadcast start type link app from the communication device 13, and acquires the acquired broadcast start point. The application engine 32 starts the type-linked application. It should be noted that the acquisition process can be omitted when the corresponding broadcast start type link app has already been acquired.

  In step S <b> 24, the application control unit 30 operates using the receiving device control function from the broadcast start type link app activated by the application engine 32 (specifically, operations corresponding to the items of the domain unit permission information 101). ) Is instructed. If this determination result is affirmative, the process proceeds to step S25.

  In step S25, it is determined whether or not the operation is permitted by the domain unit permission information 101 set for the currently transiting domain. If this determination result is affirmative, the process proceeds to step S26. In step S26, an operation using the receiving device control function instructed from the broadcasting start type link app is executed.

  If the determination result in step S25 is negative, the process proceeds to step S27, and the application control unit 30 ends the broadcast start type linked app that instructs the application engine 32 to perform an operation that is not allowed. Then, the conjunction application execution process ends with an error. The instructed operation may be ignored instead of ending the broadcast starting type linked app.

  If the determination result of step S24 is negative, steps S25 to S27 are skipped and the process proceeds to step S28.

  In step S <b> 28, the application control unit 30 causes a transition of a web page exceeding the application boundary range set by the application boundary of the application control information 100 and the domain unit permission information 101 by the broadcast start type link app being executed. Determine whether or not. If this determination result is affirmative, the process proceeds to step S29. In the case of boundaryless_flag = 1, it is assumed that all the permission information except the domain specified in the application control information 100 indicates non-permission, and no transition exceeding the application boundary occurs.

  In step S <b> 29, the application engine 32 ends the broadcast start type linked app that is about to transition to a web page outside the range of the application boundary in accordance with the control from the application control unit 30. Then, the conjunction application execution process ends with an error. Note that the instructed transition operation may be ignored instead of ending the broadcast starting type linked app.

  If the determination result of step S28 is affirmative, the process proceeds to step S30. In step S30, the application control unit 30 determines whether or not a transition to a general application such as an Internet browser has occurred by using a function of a predetermined JAVA (registered trademark) script, for example, by the broadcast start type linked application being executed. Determine whether. If this determination result is affirmative, the process proceeds to step S31. In step S <b> 31, the application engine 32 ends the broadcast start type link app being executed and starts an Internet browser or the like as a general app in accordance with the control from the application control unit 30. Thereby, the conjunction application execution process is terminated.

  If the determination result of step S30 is negative, the process proceeds to step S32. In step S32, the application control unit 30 determines whether or not a transition from the broadcast start type link app being executed to another broadcast start type link app has occurred. If this determination result is affirmative, the process proceeds to step S33.

  In step S33, the application control unit 30 refers to the application control command 54 of the most recently received application control information 100, and determines whether or not the other broadcast-starting linked app is currently operable. To do. If this determination result is affirmative, the process returns to step S23, and the processes after step S23 described above are performed in order to activate another broadcast-starting linked app of the transition destination.

  On the other hand, when the determination result in step S33 is negative, the process proceeds to step S34. In step S34, the other broadcast start type link app that is the transition destination is not started, and the broadcast start type link app that is being executed is also ended. Then, the conjunction application execution process ends with an error. Instead of ending the broadcast start type link app, the transition to another instructed broadcast start type link app may be ignored.

  If the determination result of step S32 is negative, the process proceeds to step S35. In step S <b> 35, the application control unit 30 changes the web page within the application boundary set by the application boundary of the application control information 100 and the domain unit permission information 101 by the broadcast start type link application being executed. It is determined whether or not it has occurred. If this determination result is affirmative, the process proceeds to step S36. In step S36, the broadcast starting type link application acquires transition destination html data and the like from the server of the corresponding domain, and displays the corresponding web page.

  If the determination result of step S35 is negative, the process proceeds to step S37. In step S <b> 37, the application control unit 30 determines whether or not to end the broadcast start type link app being executed. Specifically, it is determined that the application control command 54 of the most recently received application control information 100 has ended or when the user has performed a predetermined end operation. If this determination result is negative, the process returns to step S24 and the subsequent steps are repeated. On the other hand, when the determination result of step S37 is affirmative, the application engine 32 ends the broadcast start type link app being executed according to the control of the application control unit 30. Thereby, the linked application execution process is also terminated.

  According to the linked application execution process described above, the execution of the receiving device control function in each domain of the web page to which the broadcast origin type linked application is to be transitioned is broadcasted by the application boundary of the application control information 100 and the domain unit permission information 101. The side can be controlled step by step.

  The linked application execution process described above is similarly executed as a preprocess when a non-broadcast starting type linked application is activated in the receiving device 20. However, in this case, the supply source of the application control information 100 is changed to a predetermined server. Therefore, if only the legitimate application control information 100 authenticated by the broadcast side is supplied to the receiving device 20, the broadcasting side can control the receiving device control function in each domain of the web page to which the non-broadcast start type link app is to be changed. It can be controlled in stages.

  By the way, the above-described series of processing can be executed by hardware or can be executed by software. When a series of processing is executed by software, a program constituting the software may execute various functions by installing a computer incorporated in dedicated hardware or various programs. For example, it is installed from a program recording medium in a general-purpose personal computer or the like.

  FIG. 17 is a block diagram illustrating a configuration example of hardware of a computer that executes the above-described series of processing by a program.

  In this computer 200, a CPU (Central Processing Unit) 201, a ROM (Read Only Memory) 202, and a RAM (Random Access Memory) 203 are connected to each other by a bus 204.

  An input / output interface 205 is further connected to the bus 204. The input / output interface 205 includes an input unit 206 composed of a keyboard, mouse, microphone, etc., an output unit 207 composed of a display, a speaker, etc., a storage unit 208 composed of a hard disk or nonvolatile memory, and a communication unit 209 composed of a network interface. A drive 210 for driving a removable medium 211 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is connected.

  In the computer configured as described above, the CPU 201 loads, for example, the program stored in the storage unit 208 to the RAM 203 via the input / output interface 205 and the bus 204 and executes the program, and the series described above. Is performed.

  The program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.

  The program may be processed by a single computer, or may be distributedly processed by a plurality of computers. Furthermore, the program may be transferred to a remote computer and executed.

  Further, in this specification, the system represents the entire apparatus constituted by a plurality of apparatuses.

  The embodiment of the present disclosure is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present disclosure.

  10 Linked Application Control System, 11 Broadcasting Device, 12 Broadcasting Network, 13 Communication Device, 14 IP Communication Network, 20 Receiving Device, 21 Broadcast Tuner, 22 Descrambler, 23 CAS Module, 24 Demultiplexer, 25 Data Broadcast Processing Unit, 26 Data broadcasting engine, 27 video decoder, 28 audio decoder, 29 subtitle decoder, 30 application control unit, 31 IP communication I / F, 32 application engine, 33 video output unit, 34 audio output unit, 35 operation input unit, 36 control unit , 50 Application control information (AIT), 61 Permission information, 71 Video reference, 72 Real-time channel selection, 73 Reserved channel selection, 74 SI reference, 75 Current channel selection information acquisition, 76 NVRAM Read, 77 NVRAM, 100 Application control information (AIT), 101 Application boundary and domain unit permission information, 200 computers, 201 CPU

Claims (2)

In a receiving device that receives content broadcast via a broadcast network,
A communication unit that performs communication processing;
An application execution unit that executes a linked application linked to the received content;
An application control unit that controls the application execution unit based on application control information related to the conjunction application, and
The communication unit acquires the conjunction application via a communication network,
In the application control information, an application boundary indicating a range of a URL (Uniform Resource Locator) for linking the linked application with the content, and whether or not the linked application has an access right to the broadcast resource is assigned to each bit. Contains at least permission information expressed in bitmap structure,
The bitmap structure is
A first bit area composed of upper bits, and a second bit area composed of lower bits assigned to each bit position with or without function,
In the first bit area, a value for switching each function assigned to each bit position of the second bit area is set,
The application control unit is a receiving device that sets an access authority to the broadcast resource by the permission information for each function within a range of a URL indicated by the application boundary for the linked application . In a receiving method of a receiving device that receives content broadcast via a broadcast network,
By the receiving device,
A communication processing step for performing communication processing;
An application execution step for executing a linked application linked to the received content;
Based on the application control information relating to the interlocking application, see contains an application control step for controlling processing of said application executing step,
The communication processing step includes a process of acquiring the conjunction application via a communication network,
The application control information is represented by a bitmap structure in which an application boundary representing a range of a URL that links the linked application to the content, and whether or not the linked application has an access right to the broadcast resource is assigned to each function bit. At least the permission information
The bitmap structure is
A first bit area composed of upper bits, and a second bit area composed of lower bits assigned to each bit position with or without function,
In the first bit area, a value for switching each function assigned to each bit position of the second bit area is set,
A receiving method for setting access authority to the broadcast resource by the permission information for each function within the range of the URL indicated by the application boundary for the linked application by the processing of the application control step .

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